PREN 4707-2012
Aerospace series Acid pickling of aluminum and aluminum alloy without hexavalent chromium (Edition P 1)

Standard No.

PREN 4707-2012

Release Date

2012

Published By

ASD-STAN - Aerospace and Defence Industries Association of Europe - Standardization

Status

Be replaced 2018-04

Replace By

PREN 4707-2018

Latest

PREN 4707-2018

Scope

This standard specifies the acid pickling of aluminium and aluminium alloys. It is applicable whenever referenced. Purpose of process Pre-treatment before penetrant testing/penetrant inspection. Pre-treatment before anodizing. Final treatment for parts prior to adhesive bonding application. Final treatment before welding or brazing. Pre-treatment before chemical milling. Final treatment for parts prior to painting application. Pre-treatment for parts prior to surface conversion coatings. Desmutting (Blanchiment)@ after alkaline etching or acid pickling.

PREN 4707-2012 history

• 2018 PREN 4707-2018 Aerospace series Acid pickling of aluminium and aluminium alloys without hexavalent chromium (Edition P 2)
• 2012 PREN 4707-2012 Aerospace series Acid pickling of aluminum and aluminum alloy without hexavalent chromium (Edition P 1)